The relationship between osmotic pressure at 273 K, when 10 gm glucose (P₁), 10 gm urea (P₂), and 10 gm sucrose (P₃) are dissolved in 250 ml of water, is-

1. P₁ > P₂ > P₃

2. P₃ > P₁ > P₂

3. P₂ > P₁ > P₃

4. P₂ > P₃ > P₁

Two aqueous NaCl solutions are separated by a semipermeable membrane. Solution A contains 2% NaCl, while solution B contains 10% NaCl. Predict the direction of movement of water through the membrane.

1. NaCl will flow from 'A' to 'B'

2. NaCl will flow from 'B' to 'A'

3. Water will flow from 'A' to 'B'

4. Water will flow from 'B' to 'A'

Identify the factor on which the vapour pressure of water depends.

 1. Surface area of the container

 2. Volume of container

 3. Temperature

 4. All of the above

The boiling point of an azeotropic mixture of water and ethanol is less than that of water and ethanol. The mixture shows

(1) No deviation from Raoult's law

(2) Positive deviation from Raoult's law

(3) Negative deviation from Raoult's law

(4) That the solution is unsaturated

A 5.85% solution of NaCl has osmotic pressure close to-

1. 5.85% solution of urea

2. 2M solution of glucose

3. 1M solution of urea

4. 5.8% solution of glucose

Calculate the number of moles of K₂SO₄ that must be dissolved in 12 moles of water to lower its vapour pressure by 10 mm Hg. The vapour pressure of pure water at the same temperature is 50 mm Hg.
Assume complete dissociation of K₂SO₄.

The salt that possesses the highest freezing point

1. 0.01 M NaCl

2. 0.05 M Urea

3. 0.01 M MgCl₂

4. 0.02 M NaCl

Aluminium phosphate is 100 % ionized in 0.01 m aqueous solution. Hence, $∆{\mathrm{T}}_{\mathrm{b}}/{\mathrm{k}}_{\mathrm{b}}$ is-

Which solution has highest freezing point?

1. 1% glucose solution

2. 1% urea solution

3. 1% sucrose solution

4. All have same freezing

Osmotic pressure of 40% (w/V) urea solution is 1.64 atm. and that of 3.42% (w/V) cane sugar solution is 2.46 atm. When equal volumes of the above two solutions are mixed, the osmotic pressure of the resulting solution will be?  
 

(1) 1.64 atm

(2) 2.46 atm

(3) 4.10 atm

(4) 2.05 atm